vertigo and heart symptoms, help

Hi, I am a 17 year old male in good health and an athlete. about 3weeks- 1 month ago i suddenly got dizzyness or vertigo. it felt like i was spinning and going to fall through floor. it was constant for a little over a week and then gradualy faded. I went to my regular doctor and he essentialy perscripbed me motion sickness medicine (dramamine) for the neausa and thought it was nothing. Then i went to a neurologist who thought it was begnin positional vertigo and did tests. complete blood work looked normal and everything. it seemd to get better but my head still feels slightly not normal. when i stare at things it appears as they are moving slightly back and forth left and right. I dont know if this is anything but when i stare at small to average sized objects close to my face i see double.